Well, most of the problems are hit and miss, and I suppose I'll figure those out eventually. But one thing, is editing the font of one character of a title and not the whole title. Obviously subscripts are used a lot in lab reports, and I hate not being able to make one in the title. If this is what people really use, then I can learn it, but I wanted to make sure there wasn't something better. Thanks!

Graphical Analysis (from Vernier) has my recommendation. I use it with my students for physics and physics labs. Quite a few students have gone on to request permission from other teachers to use it for lab reports rather than excel, because it's much more intuitive (and quicker) to use.

edit: it's not shareware, but the license is very reasonable (I believe a site license for our entire school is $70) There's a trial version if I recall correctly.

The best open-source plotting software on the planet is, without a doubt, gnuplot. I suggest downloading the Cygwin Unix-like environment for Windows, which includes gnuplot. Gnuplot will present a brief learning curve, but it's free and incredibly powerful.